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  1. /*
  2.  * Copyright (c) 2005 Martin Decky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup libc
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <libc.h>
  36. #include <unistd.h>
  37. #include <stdio.h>
  38. #include <io/io.h>
  39.  
  40. const static char nl = '\n';
  41.  
  42. int puts(const char *str)
  43. {
  44.     size_t count;
  45.    
  46.     if (str == NULL)
  47.         return putnchars("(NULL)", 6);
  48.    
  49.     for (count = 0; str[count] != 0; count++);
  50.     if (write_stdout((void *) str, count) == count) {
  51.         if (write_stdout(&nl, 1) == 1)
  52.             return 0;
  53.     }
  54.    
  55.     return EOF;
  56. }
  57.  
  58. /** Put count chars from buffer to stdout without adding newline
  59.  * @param buf Buffer with size at least count bytes - NULL pointer NOT allowed!
  60.  * @param count
  61.  * @return 0 on succes, EOF on fail
  62.  */
  63. int putnchars(const char *buf, size_t count)
  64. {
  65.     if (write_stdout((void *) buf, count) == count)
  66.         return 0;
  67.    
  68.     return EOF;
  69. }
  70.  
  71. /** Same as puts, but does not print newline at end
  72.  *
  73.  */
  74. int putstr(const char *str)
  75. {
  76.     size_t count;
  77.    
  78.     if (str == NULL)
  79.         return putnchars("(NULL)", 6);
  80.  
  81.     for (count = 0; str[count] != 0; count++);
  82.     if (write_stdout((void *) str, count) == count)
  83.         return 0;
  84.    
  85.     return EOF;
  86. }
  87.  
  88. int putchar(int c)
  89. {
  90.     unsigned char ch = c;
  91.     if (write_stdout((void *) &ch, 1) == 1)
  92.         return c;
  93.    
  94.     return EOF;
  95. }
  96.  
  97. int getchar(void)
  98. {
  99.     unsigned char c;
  100.  
  101.     flush_stdout();
  102.     if (read_stdin((void *) &c, 1) == 1)
  103.         return c;
  104.    
  105.     return EOF;
  106. }
  107.  
  108. int fflush(FILE *f)
  109. {
  110.     (void) f;
  111.     return flush_stdout();
  112. }
  113.  
  114. /** @}
  115.  */
  116.